Temperature-stable liquid aqueous polysaccharide suspensions and use thereof as thickening agents in cementitious compositions
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United States of America Patent
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May 20, 2014
Grant Date -
Mar 28, 2013
app pub date -
Nov 21, 2012
filing date -
Mar 15, 2010
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Abstract
A liquid aqueous suspension of polysaccharide, contains a mass concentration of at least one polysaccharide of between 15 and 35% in the form of partially hydrated particles dispersed in an aqueous solution of a strong base salt, excluding ammonium salts, with an ionic strength of between 1.25 mol/L and 15 mol/L, has a pH greater than 9 and contains at least one non-phyllitic crystalline mineral powder, referred to hereafter as filler, which is chemically inert in the aqueous suspension and which has a grain size of between 0.1 and 100 micrometers and an attapulgite in micronized form, the aqueous suspension being stable at least in a temperature range from 5 to 30° C. The suspension is suitable for use as an agent for thickening cementitious compositions.
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